Blue gold: Searching for the world's rarest denim

Available for over a year

From eBay to the abandoned silver mines of the American West: Viktor Fredback has built a denim collection spanning 100 years of American history, and worth hundreds of thousands of dollars. He's sacrificed time, money, and relationships in his pursuit of historic denim, and has even undertaken dangerous expeditions into long-abandoned 19th Century silver mines. Presenter: Mobeen Azhar Producer: Mary Goodhart (Photo: Viktor Fredback with denim jeans. Credit: Paul Blomgren)